Blackle is a website powered by Google Custom Search, which aims to save energy by displaying a black background and using grayish-white font color for search results.
The concept behind Blackle is that computer monitors can be made to consume less energy by displaying much darker colors. Blackle is based on a study which tested a variety of CRT and LCD monitors. There is dispute over whether there really are any energy saving effects. This concept was first brought to the attention of Heap Media by a blog post, which estimated that Google could save 750 megawatt hours a year by utilizing it for CRT screens. The homepage of Blackle provides a count of the number of watt hours claimed to have been saved by enabling this concept.
Statistics on power savings on the various LCD Models are listed in the attached image.
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